Have finally watched Red Dwarf: Back to Earth ...
I liked it, generally. Of course, I went into it afraid that the team involved would have lost the plot, so to speak, and it just wouldn't be funny at all. But I did laugh, and quite a bit. The Blade Runner references/homage were hilarious at first (although not quite as funny as time went on), and I got a kick out of seeing the Red Dwarf cast on the set of Coronation Street.
I wish there had been more Kochanski/Chloe Annett, both for the usual schoolboy-type reasons and because I like the character and actress, but, hey, after all this time I'm amazed they got everyone back at all.
And of course anyone who'd watched the series probably figured out the general plot about 15 minutes in ...
In the extras they kept talking about doing a new series ... well, I'd vote for that!! (And I have, since I just made up a poll for that very thing

And yes, it would be series 10, and not 9, as the producer points out in the DVD extras for Back to Earth.)
--Jeff